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mail2-nixos-config/checkmk-agent/files/check_mk_agent.linux

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add the checkmk agent and config
2024-08-21 01:16:00 +02:00
#!/bin/bash
# Copyright (C) 2019 Checkmk GmbH - License: GNU General Public License v2
# This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
# conditions defined in the file COPYING, which is part of this source code package.
#
# BEGIN COMMON AGENT CODE
#
usage() {
cat <<HERE
Usage: ${0} [OPTION...]
The Checkmk agent to monitor *nix style systems.
Options:
-h, --help show this message and exit
-d, --debug emit debugging messages
-p, --profile create files containing the execution times
--force-inventory get the output of the agent plugin 'mk_inventory'
independent of the last run state.
HERE
}
inpath() {
# replace "if type [somecmd]" idiom
# 'command -v' tends to be more robust vs 'which' and 'type' based tests
command -v "${1:?No command to test}" >/dev/null 2>&1
}
get_file_atime() {
stat -c %X "${1}" 2>/dev/null ||
stat -f %a "${1}" 2>/dev/null ||
perl -e 'if (! -f $ARGV[0]){die "0000000"};$atime=(stat($ARGV[0]))[8];print $atime."\n";' "${1}"
}
get_file_mtime() {
stat -c %Y "${1}" 2>/dev/null ||
stat -f %m "${1}" 2>/dev/null ||
perl -e 'if (! -f $ARGV[0]){die "0000000"};$mtime=(stat($ARGV[0]))[9];print $mtime."\n";' "${1}"
}
is_valid_plugin() {
# test if a file is executable and does not have certain
# extensions (remnants from distro upgrades).
case "${1:?No plugin defined}" in
*.dpkg-new | *.dpkg-old | *.dpkg-temp | *.dpkg-tmp) return 1 ;;
*) [ -f "${1}" ] && [ -x "${1}" ] ;;
esac
}
set_up_process_commandline_arguments() {
while [ -n "${1}" ]; do
case "${1}" in
-d | --debug)
set -xv
DISABLE_STDERR=false
shift
;;
-p | --profile)
LOG_SECTION_TIME=true
# disable caching to get the whole execution time
DISABLE_CACHING=true
shift
;;
--force-inventory)
export MK_FORCE_INVENTORY=true
shift
;;
-h | --help)
usage
exit 1
;;
*)
shift
;;
esac
done
}
set_up_get_epoch() {
# On some systems date +%s returns a literal %s
if date +%s | grep "^[0-9].*$" >/dev/null 2>&1; then
get_epoch() { date +%s; }
else
# do not check whether perl is even present.
# in weird cases we may be fine without get_epoch.
get_epoch() { perl -e 'print($^T."\n");'; }
fi
}
set_up_current_shell() {
# Note the current shell may not be the same as what is specified in the
# shebang, e.g. when reconfigured in the xinetd/systemd/whateverd config file
CURRENT_SHELL="$(ps -o args= -p $$ | cut -d' ' -f1)"
}
#
# END COMMON AGENT CODE
#
set_variable_defaults() {
# some 'booleans'
[ "${MK_RUN_SYNC_PARTS}" = "false" ] || MK_RUN_SYNC_PARTS=true
[ "${MK_RUN_ASYNC_PARTS}" = "false" ] || MK_RUN_ASYNC_PARTS=true
# WATCH OUT: These 5 lines are searched for and replaced by the
# agent bakery!
# TODO: CMK-8339 (proper configuration)
: "${MK_LIBDIR:="/usr/lib/check_mk_agent"}"
: "${MK_CONFDIR:="/etc/check_mk"}"
: "${MK_VARDIR:="/var/lib/check_mk_agent"}"
: "${MK_LOGDIR:="/var/log/check_mk_agent"}"
: "${MK_BIN:="/usr/bin"}"
export MK_LIBDIR
export MK_CONFDIR
export MK_VARDIR
export MK_LOGDIR
export MK_BIN
# Optionally set a tempdir for all subsequent calls
#export TMPDIR=
# All executables in PLUGINSDIR will simply be executed and their
# ouput appended to the output of the agent. Plugins define their own
# sections and must output headers with '<<<' and '>>>'
PLUGINSDIR=${MK_LIBDIR}/plugins
# All executables in LOCALDIR will by executabled and their
# output inserted into the section <<<local>>>. Please
# refer to online documentation for details about local checks.
LOCALDIR=${MK_LIBDIR}/local
# All files in SPOOLDIR will simply appended to the agent
# output if they are not outdated (see below)
SPOOLDIR=${MK_VARDIR}/spool
}
set_up_path() {
_PATH="${1}"
# Make sure that locally installed binaries are found
# Only add binaries if they are not already in the path! If you append to path in a loop the process will
# eventually each the 128k size limit for the environment and become a zombie process. See execve manpage.
[ "${_PATH#*"/usr/local/bin"}" != "${_PATH}" ] || _PATH="${_PATH}:/usr/local/bin"
[ -n "${MK_BIN}" ] && { [ "${_PATH#*"${MK_BIN}"}" != "${_PATH}" ] || _PATH="${_PATH}:${MK_BIN}"; }
[ -d "/var/qmail/bin" ] && { [ "${_PATH#*"/var/qmail/bin"}" != "${_PATH}" ] || _PATH="${_PATH}:/var/qmail/bin"; }
echo "${_PATH}"
unset _PATH
}
set_up_remote() {
# Provide information about the remote host. That helps when data
# is being sent only once to each remote host.
REMOTE="${REMOTE_HOST:-"${REMOTE_ADDR:-"${SSH_CLIENT%% *}"}"}"
# If none of the above are set *and* we are configured to, try to read it from stdin
[ -z "${REMOTE}" ] && [ "${MK_READ_REMOTE}" = "true" ] && read -r REMOTE
export REMOTE
}
announce_remote() {
# let RTCs know about this remote
[ -d "${MK_VARDIR}/rtc_remotes" ] || mkdir "${MK_VARDIR}/rtc_remotes"
[ -n "${REMOTE}" ] && [ "${REMOTE}" != "push-connection" ] && touch "${MK_VARDIR}/rtc_remotes/${REMOTE}"
}
#
# BEGIN COMMON AGENT CODE
#
# SC2089: Quotes/backslashes will be treated literally. Use an array.
# shellcheck disable=SC2089
MK_DEFINE_LOG_SECTION_TIME='_log_section_time() { "$@"; }'
finalize_profiling() { :; }
set_up_profiling() {
PROFILING_CONFIG="${MK_CONFDIR}/profiling.cfg"
if [ -e "${PROFILING_CONFIG}" ]; then
# Config vars:
# LOG_SECTION_TIME=true/false
# DISABLE_CACHING=true/false
# If LOG_SECTION_TIME=true via profiling.cfg do NOT disable caching in order
# to get the real execution time during operation.
# shellcheck disable=SC1090
. "${PROFILING_CONFIG}"
fi
PROFILING_LOGFILE_DIR="${MK_LOGDIR}/profiling/$(date +%Y%m%d_%H%M%S)"
if ${LOG_SECTION_TIME:-false}; then
mkdir -p "${PROFILING_LOGFILE_DIR}"
agent_start="$(perl -MTime::HiRes=time -le 'print time()')"
# SC2016: Expressions don't expand in single quotes, use double quotes for that.
# SC2089: Quotes/backslashes will be treated literally. Use an array.
# shellcheck disable=SC2016,SC2089
MK_DEFINE_LOG_SECTION_TIME='_log_section_time() {
section_func="$@"
base_name=$(echo "${section_func}" | sed "s/[^A-Za-z0-9.-]/_/g")
profiling_logfile="'"${PROFILING_LOGFILE_DIR}"'/${base_name}.log"
start="$(perl -MTime::HiRes=time -le "print time()")"
{ time ${section_func}; } 2>> "${profiling_logfile}"
echo "runtime $(perl -MTime::HiRes=time -le "print time() - ${start}")" >> "${profiling_logfile}"
}'
finalize_profiling() {
pro_log_file="${PROFILING_LOGFILE_DIR}/profiling_check_mk_agent.log"
agent_end="$(perl -MTime::HiRes=time -le 'print time()')"
echo "runtime $(echo "${agent_end} - ${agent_start}" | bc)" >>"${pro_log_file}"
}
fi
eval "${MK_DEFINE_LOG_SECTION_TIME}"
# SC2090: Quotes/backslashes in this variable will not be respected.
# shellcheck disable=SC2090
export MK_DEFINE_LOG_SECTION_TIME
}
unset_locale() {
# eliminate localized outputs where possible
# The locale logic here is used to make the Python encoding detection work (see CMK-2778).
unset -v LANG LC_ALL
if inpath locale && inpath paste; then
# match C.UTF-8 at the beginning, but not e.g. es_EC.UTF-8!
case "$(locale -a | paste -sd ' ' -)" in
*' C.UTF-8'* | 'C.UTF-8'*) LC_ALL="C.UTF-8" ;;
*' C.utf8'* | 'C.utf8'*) LC_ALL="C.utf8" ;;
esac
fi
LC_ALL="${LC_ALL:-C}"
export LC_ALL
}
#
# END COMMON AGENT CODE
#
read_python_version() {
if inpath "${1}"; then
version=$(${1} -c 'import sys; print("%s.%s"%(sys.version_info[0], sys.version_info[1]))')
major=${version%%.*}
minor=${version##*.}
if [ "${major}" -eq "${2}" ] && [ "${minor}" -ge "${3}" ]; then
echo "${1}"
return 0
fi
fi
return 1
}
detect_python() {
PYTHON3=$(read_python_version python3 3 4 || read_python_version python 3 4)
PYTHON2=$(read_python_version python2 2 6 || read_python_version python 2 6)
if [ -f "${MK_CONFDIR}/python_path.cfg" ]; then
# shellcheck source=/dev/null
. "${MK_CONFDIR}/python_path.cfg"
fi
export PYTHON2 PYTHON3
if [ -z "${PYTHON2}" ] && [ -z "${PYTHON3}" ]; then
NO_PYTHON=true
elif [ -n "${PYTHON3}" ] && [ "$(
${PYTHON3} -c 'pass' >/dev/null 2>&1
echo $?
)" -eq 127 ]; then
WRONG_PYTHON_COMMAND=true
elif [ -z "${PYTHON3}" ] && [ "$(
${PYTHON2} -c 'pass' >/dev/null 2>&1
echo $?
)" -eq 127 ]; then
WRONG_PYTHON_COMMAND=true
fi
}
detect_container_environment() {
if [ -f /.dockerenv ]; then
IS_DOCKERIZED=1
elif grep container=lxc /proc/1/environ >/dev/null 2>&1; then
# Works in lxc environment e.g. on Ubuntu bionic, but does not
# seem to work in proxmox (see CMK-1561)
IS_LXC_CONTAINER=1
elif grep 'lxcfs /proc/cpuinfo fuse.lxcfs' /proc/mounts >/dev/null 2>&1; then
# Seems to work in proxmox
IS_LXC_CONTAINER=1
else
unset IS_DOCKERIZED
unset IS_LXC_CONTAINER
fi
if [ -n "${IS_DOCKERIZED}" ] || [ -n "${IS_LXC_CONTAINER}" ]; then
if [ "$(stat -fc'%t' /sys/fs/cgroup)" = "63677270" ]; then
IS_CGROUP_V2=1
CGROUP_SECTION_SUFFIX="_cgroupv2"
else
unset IS_CGROUP_V2
unset CGROUP_SECTION_SUFFIX
fi
fi
}
# Prefer (relatively) new /usr/bin/timeout from coreutils against
# our shipped waitmax. waitmax is statically linked and crashes on
# some Ubuntu versions recently.
if inpath timeout; then
waitmax() {
timeout "$@"
}
fi
encryption_panic() {
echo "<<<check_mk>>>"
echo "EncryptionPanic: true"
exit 1
}
set_up_encryption() {
# shellcheck source=agents/cfg_examples/encryption.cfg
[ -f "${MK_CONFDIR}/encryption.cfg" ] && {
. "${MK_CONFDIR}/encryption.cfg" || encryption_panic
}
define_optionally_encrypt "${ENCRYPTED:-"no"}"
}
hex_decode() {
# We might not have xxd available, so we have to do it manually.
# Be aware that this implementation is very slow and should not be used for large data.
local hex="$1"
for ((i = 0; i < ${#hex}; i += 2)); do
printf '%b' "\x${hex:i:2}"
done
}
parse_kdf_output() {
local kdf_output="$1"
salt_hex=$(echo "$kdf_output" | grep -oP "(?<=salt=)[0-9A-F]+")
key_hex=$(echo "$kdf_output" | grep -oP "(?<=key=)[0-9A-F]+")
iv_hex=$(echo "$kdf_output" | grep -oP "(?<=iv =)[0-9A-F]+")
# Make sure this rather brittle grepping worked. For example, some openssl update might decide
# to remove that odd-looking space behind 'iv'.
# Note that the expected LENGTHS ARE DOUBLED because the values are hex encoded.
if [ ${#salt_hex} -ne 16 ] || [ ${#key_hex} -ne 64 ] || [ ${#iv_hex} -ne 32 ]; then
encryption_panic
fi
echo "$salt_hex" "$key_hex" "$iv_hex"
}
encrypt_then_mac() {
# Encrypt the input data, calculate a MAC over IV and ciphertext, then
# print mac and ciphertext.
local salt_hex="$1"
local key_hex="$2"
local iv_hex="$3"
local ciphertext_b64
# We need the ciphertext twice: for the mac and for the output. But we can only store it in
# encoded form because it can contain null bytes.
ciphertext_b64=$(openssl enc -aes-256-cbc -K "$key_hex" -iv "$iv_hex" | openssl enc -base64)
(
hex_decode "$iv_hex"
echo "$ciphertext_b64" | openssl enc -base64 -d
) | openssl dgst -sha256 -mac HMAC -macopt hexkey:"$key_hex" -binary
echo "$ciphertext_b64" | openssl enc -base64 -d
}
define_optionally_encrypt() {
# if things fail, make sure we don't accidentally send unencrypted data
unset optionally_encrypt
if [ "${1}" != "no" ]; then
OPENSSL_VERSION=$(openssl version | awk '{print $2}' | awk -F . '{print (($1 * 100) + $2) * 100+ $3}')
#
# Encryption scheme for version 04 and 05:
#
# salt <- random_salt()
# key, IV <- version_specific_kdf( salt, password )
#
# ciphertext <- aes_256_cbc_encrypt( key, IV, message )
# mac <- hmac_sha256( key, iv:ciphertext )
#
# // The output blob is formed as:
# // - 2 bytes version
# // - optional: rtc timestamp
# // - 8 bytes salt
# // - 32 bytes MAC
# // - the ciphertext
# result <- [version:salt:mac:ciphertext]
if [ "${OPENSSL_VERSION}" -ge 10101 ]; then
optionally_encrypt() {
# version: 05
# kdf: pbkdf2, 600.000 iterations
local salt_hex key_hex iv_hex
read -r salt_hex key_hex iv_hex <<<"$(
parse_kdf_output "$(openssl enc -aes-256-cbc -md sha256 -pbkdf2 -iter 600000 -k "${1}" -P)"
)"
printf "05"
printf "%s" "${2}"
hex_decode "$salt_hex"
encrypt_then_mac "$salt_hex" "$key_hex" "$iv_hex"
}
elif [ "${OPENSSL_VERSION}" -ge 10000 ]; then
optionally_encrypt() {
# version: 04
# kdf: openssl custom kdf based on sha256
local salt_hex key_hex iv_hex
read -r salt_hex key_hex iv_hex <<<"$(
parse_kdf_output "$(openssl enc -aes-256-cbc -md sha256 -k "${1}" -P)"
)"
printf "04"
printf "%s" "${2}"
hex_decode "$salt_hex"
encrypt_then_mac "$salt_hex" "$key_hex" "$iv_hex"
}
else
optionally_encrypt() {
printf "00%s" "${2}"
openssl enc -aes-256-cbc -md md5 -k "${1}" -nosalt
}
fi
else
optionally_encrypt() {
[ -n "${2}" ] && printf "99%s" "${2}"
cat
}
fi
}
set_up_disabled_sections() {
if [ -f "${MK_CONFDIR}/exclude_sections.cfg" ]; then
# shellcheck source=agents/cfg_examples/exclude_sections.cfg
. "${MK_CONFDIR}/exclude_sections.cfg"
fi
}
export_utility_functions() {
# At the time of writing of this function, the linux agent exports
# some helper functions, so I consolidate those exports here.
# I am not sure whether this is a good idea, though.
# Their API is unstable.
export -f run_mrpe
export -f waitmax
export -f run_cached
}
section_checkmk() {
cat <<HERE
<<<check_mk>>>
Version: 2.3.0p12
AgentOS: linux
Hostname: $(uname -n)
AgentDirectory: ${MK_CONFDIR}
DataDirectory: ${MK_VARDIR}
SpoolDirectory: ${SPOOLDIR}
PluginsDirectory: ${PLUGINSDIR}
LocalDirectory: ${LOCALDIR}
HERE
# try to find only_from configuration
if [ -n "${REMOTE_HOST}" ]; then # xinetd
sed -n "/^service[[:space:]]*check-mk-agent/,/}/s/^[[:space:]]*only_from[[:space:]]*=[[:space:]]*\(.*\)/OnlyFrom: \1/p" /etc/xinetd.d/* | head -n1
elif inpath systemctl; then # systemd
sed -n '/^IPAddressAllow/s/IPAddressAllow=/OnlyFrom: /p' "/usr/lib/systemd/system/check-mk-agent.socket" 2>/dev/null
# NOTE: The above line just reads back the socket file we deployed ourselves. Systemd units can be altered by
# other user defined unit files, so this *may* not be correct. A better way of doing this seemed to be querying
# systemctl itself about the 'effective' property:
#
# systemctl show --property IPAddressAllow "check-mk-agent.socket" | sed 's/IPAddressAllow=/OnlyFrom: /'
#
# However this ("successfully") reports an empty list or '[unprintable]' on older systemd versions :-(
fi
#
# OS based labels are created from these variables
#
echo "OSType: linux"
while read -r line; do
raw_line="${line//\"/}"
case $line in
ID=*) echo "OSPlatform: ${raw_line##*=}" ;;
NAME=*) echo "OSName: ${raw_line##*=}" ;;
VERSION_ID=*) echo "OSVersion: ${raw_line##*=}" ;;
esac
done <<<"$(cat /etc/os-release 2>/dev/null)"
#
# BEGIN COMMON AGENT CODE
#
if [ -n "${NO_PYTHON}" ]; then
python_fail_msg="No suitable python installation found."
elif [ -n "${WRONG_PYTHON_COMMAND}" ]; then
python_fail_msg="Configured python command not found."
fi
cat <<HERE
FailedPythonReason: ${python_fail_msg}
SSHClient: ${SSH_CLIENT}
HERE
}
section_cmk_agent_ctl_status() {
cmk-agent-ctl --version 2>/dev/null >&2 || return
printf "<<<cmk_agent_ctl_status:sep(0)>>>\n"
cmk-agent-ctl status --json --no-query-remote
}
section_checkmk_agent_plugins() {
printf "<<<checkmk_agent_plugins_lnx:sep(0)>>>\n"
printf "pluginsdir %s\n" "${PLUGINSDIR}"
printf "localdir %s\n" "${LOCALDIR}"
for script in \
"${PLUGINSDIR}"/* \
"${PLUGINSDIR}"/[1-9]*/* \
"${LOCALDIR}"/* \
"${LOCALDIR}"/[1-9]*/*; do
if is_valid_plugin "${script}"; then
script_version=$(grep -e '^__version__' -e '^CMK_VERSION' "${script}" || echo 'CMK_VERSION="unversioned"')
printf "%s:%s\n" "${script}" "${script_version}"
fi
done
}
section_checkmk_failed_plugin() {
${MK_RUN_SYNC_PARTS} || return
echo "<<<check_mk>>>"
echo "FailedPythonPlugins: ${1}"
}
#
# END COMMON AGENT CODE
#
#
# CHECK SECTIONS
#
section_labels() {
echo '<<<labels:sep(0)>>>'
if [ -n "${IS_DOCKERIZED}" ] || [ -n "${IS_LXC_CONTAINER}" ]; then
echo '{"cmk/device_type":"container"}'
elif grep "hypervisor" /proc/cpuinfo >/dev/null 2>&1; then
echo '{"cmk/device_type":"vm"}'
fi
}
section_mem() {
if [ -n "${IS_DOCKERIZED}" ]; then
echo "<<<docker_container_mem${CGROUP_SECTION_SUFFIX}>>>"
if [ -n "${IS_CGROUP_V2}" ]; then
cat /sys/fs/cgroup/memory.stat
echo "memory.current $(cat /sys/fs/cgroup/memory.current)"
echo "memory.max $(cat /sys/fs/cgroup/memory.max)"
else
cat /sys/fs/cgroup/memory/memory.stat
echo "usage_in_bytes $(cat /sys/fs/cgroup/memory/memory.usage_in_bytes)"
echo "limit_in_bytes $(cat /sys/fs/cgroup/memory/memory.limit_in_bytes)"
fi
grep -F 'MemTotal:' /proc/meminfo
elif [ -n "${IS_LXC_CONTAINER}" ]; then
echo '<<<mem>>>'
grep -v -E '^Swap:|^Mem:|total:|^Vmalloc|^Committed' </proc/meminfo
else
echo '<<<mem>>>'
grep -v -E '^Swap:|^Mem:|total:' </proc/meminfo
fi
}
section_cpu() {
case "$(uname -m)" in
"armv7l" | "armv6l" | "aarch64")
CPU_REGEX='^processor'
;;
*)
CPU_REGEX='^CPU|^processor'
;;
esac
NUM_CPUS=$(grep -c -E ${CPU_REGEX} </proc/cpuinfo)
if [ -z "${IS_DOCKERIZED}" ] && [ -z "${IS_LXC_CONTAINER}" ]; then
echo '<<<cpu>>>'
echo "$(cat /proc/loadavg) ${NUM_CPUS}"
if [ -f "/proc/sys/kernel/threads-max" ]; then
cat /proc/sys/kernel/threads-max
fi
else
if [ -n "${IS_DOCKERIZED}" ]; then
echo "<<<docker_container_cpu${CGROUP_SECTION_SUFFIX}>>>"
else
echo "<<<lxc_container_cpu${CGROUP_SECTION_SUFFIX}>>>"
fi
if [ -n "${IS_CGROUP_V2}" ]; then
echo "uptime $(cat /proc/uptime)"
echo "num_cpus ${NUM_CPUS}"
cat /sys/fs/cgroup/cpu.stat
else
grep "^cpu " /proc/stat
echo "num_cpus ${NUM_CPUS}"
cat /sys/fs/cgroup/cpuacct/cpuacct.stat
fi
fi
}
section_uptime() {
echo '<<<uptime>>>'
if [ -z "${IS_DOCKERIZED}" ]; then
cat /proc/uptime
else
echo "$(($(get_epoch) - $(stat -c %Z /dev/pts)))"
fi
}
# Print out Partitions / Filesystems. (-P gives non-wrapped POSIXed output)
# Heads up: NFS-mounts are generally supressed to avoid agent hangs.
# If hard NFS mounts are configured or you have too large nfs retry/timeout
# settings, accessing those mounts from the agent would leave you with
# thousands of agent processes and, ultimately, a dead monitored system.
# These should generally be monitored on the NFS server, not on the clients.
section_df() {
if [ -n "${IS_DOCKERIZED}" ]; then
return
fi
# The exclusion list is getting a bit of a problem.
# -l should hide any remote FS but seems to be all but working.
excludefs="-x smbfs -x cifs -x iso9660 -x udf -x nfsv4 -x nfs -x mvfs -x prl_fs -x squashfs -x devtmpfs -x autofs -x beegfs"
if [ -z "${IS_LXC_CONTAINER}" ]; then
excludefs="${excludefs} -x zfs"
fi
echo '<<<df_v2>>>'
# We really *need* word splitting below!
# shellcheck disable=SC2086
df -PTlk ${excludefs} | sed 1d
# df inodes information
echo '<<<df_v2>>>'
echo '[df_inodes_start]'
# We really *need* word splitting below!
# shellcheck disable=SC2086
df -PTli ${excludefs} | sed 1d
echo '[df_inodes_end]'
if inpath lsblk; then
echo "[df_lsblk_start]"
lsblk --list --paths --output NAME,UUID
echo "[df_lsblk_end]"
fi
}
section_systemd() {
if inpath systemctl; then
echo '<<<systemd_units>>>'
# use plain to force ASCII output that is simpler to parse
echo "[list-unit-files]"
systemctl list-unit-files --full --no-legend --no-pager --plain --type service --type socket | tr -s ' '
echo "[status]"
systemctl status --all --type service --type socket --no-pager --lines 0 | tr -s ' '
echo "[all]"
systemctl --all --type service --type socket --full --no-legend --no-pager --plain | sed '/^$/q' | tr -s ' '
fi
}
section_zfs() {
if inpath zfs; then
echo '<<<zfsget:sep(9)>>>'
zfs get -t filesystem,volume -Hp name,quota,used,avail,mountpoint,type 2>/dev/null
echo '<<<zfsget>>>'
echo '[df]'
df -PTlk -t zfs | sed 1d
fi
}
section_nfs_mounts() {
proc_mounts_file=${1}
if inpath waitmax; then
STAT_VERSION=$(stat --version | head -1 | cut -d" " -f4)
STAT_BROKE="5.3.0"
json_templ() {
echo '{"mountpoint": "'"${1}"'", "source": "'"${2}"'", "state": "ok", "usage": {"total_blocks": %b, "free_blocks_su": %f, "free_blocks": %a, "blocksize": %s}}'
}
json_templ_empty() {
echo '{"mountpoint": "'"${1}"'", "source": "'"${2}"'", "state": "hanging", "usage": {"total_blocks": 0, "free_blocks_su": 0, "free_blocks": 0, "blocksize": 0}}'
}
echo '<<<nfsmounts_v2:sep(0)>>>'
sed -n '/ nfs4\? /s/\([^ ]*\) \([^ ]*\) .*/\1 \2/p' <"${proc_mounts_file}" |
while read -r MD MP; do
MD="$(printf "%s" "${MD}" | sed 's/\\040/ /g')"
MP="$(printf "%s" "${MP}" | sed 's/\\040/ /g')"
if [ "${STAT_VERSION}" != "${STAT_BROKE}" ]; then
waitmax -s 9 5 stat -f -c "$(json_templ "${MP}" "${MD}")" "${MP}" ||
json_templ_empty "${MP}" "${MD}"
else
(waitmax -s 9 5 stat -f -c "$(json_templ "${MP}" "${MD}")" "${MP}" &&
printf '\n') || json_templ_empty "${MP}" "${MD}"
fi
done
echo '<<<cifsmounts>>>'
sed -n -e '/ cifs /s/.*\ \([^ ]*\)\ cifs\ .*/\1/p' <"${proc_mounts_file}" |
while read -r MP; do
MP="$(printf "%s" "${MP}" | sed 's/\\040/ /g')"
if [ ! -r "${MP}" ]; then
echo "${MP} Permission denied"
elif [ "${STAT_VERSION}" != "${STAT_BROKE}" ]; then
waitmax -s 9 2 stat -f -c "${MP} ok %b %f %a %s" "${MP}" ||
echo "${MP} hanging 0 0 0 0"
else
waitmax -s 9 2 stat -f -c "${MP} ok %b %f %a %s" "${MP}" &&
printf '\n' || echo "${MP} hanging 0 0 0 0"
fi
done
fi
}
section_mounts() {
echo '<<<mounts>>>'
grep ^/dev </proc/mounts | grep -v " squashfs "
}
section_ps() {
if inpath ps; then
# processes including username, without kernel processes
echo '<<<ps_lnx>>>'
echo "[time]"
get_epoch
echo "[processes]"
CGROUP=""
if [ -e /sys/fs/cgroup ]; then
CGROUP="cgroup:512,"
fi
echo "[header] $(ps ax -ww -o "${CGROUP}"user:32,vsz,rss,cputime,etime,pid,command | tr -s ' ')"
fi
}
section_lnx_if() {
if inpath ip; then
echo '<<<lnx_if>>>'
echo "[start_iplink]"
ip address
echo "[end_iplink]"
fi
echo '<<<lnx_if:sep(58)>>>'
sed 1,2d /proc/net/dev
sed -e 1,2d /proc/net/dev | cut -d':' -f1 | sort | while read -r eth; do
echo "[${eth}]"
if inpath ethtool; then
ethtool "${eth}" | grep -E '(Speed|Duplex|Link detected|Auto-negotiation):'
else
# If interface down we get "Invalid argument"
speed=$(cat "/sys/class/net/${eth}/speed" 2>/dev/null)
if [ -n "${speed}" ] && [ "${speed}" -ge 0 ]; then
echo "Speed: ${speed}Mb/s"
fi
fi
echo "Address: $(cat "/sys/class/net/${eth}/address")"
done
}
section_bonding_interfaces() {
(
cd /proc/net/bonding 2>/dev/null || return
echo '<<<lnx_bonding:sep(58)>>>'
head -v -n 1000 ./*
)
}
section_vswitch_bonding() {
if inpath ovs-appctl; then
BONDS=$(ovs-appctl bond/list)
COL=$(echo "${BONDS}" | awk '{for(i=1;i<=NF;i++) {if($i == "bond") printf("%d", i)} exit 0}')
echo '<<<ovs_bonding:sep(58)>>>'
for bond in $(echo "${BONDS}" | sed -e 1d | cut -f"${COL}"); do
echo "[${bond}]"
ovs-appctl bond/show "${bond}"
done
fi
}
section_tcp() {
if inpath waitmax; then
echo '<<<tcp_conn_stats>>>'
if OUTPUT=$(waitmax 5 cat /proc/net/tcp /proc/net/tcp6 2>/dev/null | awk ' /:/ { c[$4]++; } END { for (x in c) { print x, c[x]; } }'); then
echo "${OUTPUT}"
elif inpath ss; then
ss -ant | grep -v ^State | awk ' /:/ { c[$1]++; } END { for (x in c) { print x, c[x]; } }' |
sed -e 's/^ESTAB/01/g;s/^SYN-SENT/02/g;s/^SYN-RECV/03/g;s/^FIN-WAIT-1/04/g;s/^FIN-WAIT-2/05/g;s/^TIME-WAIT/06/g;s/^CLOSED/07/g;s/^CLOSE-WAIT/08/g;s/^LAST-ACK/09/g;s/^LISTEN/0A/g;s/^CLOSING/0B/g;'
fi
fi
}
section_multipathing() {
if inpath multipath; then
echo '<<<multipath>>>'
multipath -l
fi
}
section_diskstat() {
if [ -z "${IS_DOCKERIZED}" ]; then
echo '<<<diskstat>>>'
get_epoch
grep -E ' (x?[shv]d[a-z]*[0-9]*|cciss/c[0-9]+d[0-9]+|emcpower[a-z]+|dm-[0-9]+|VxVM.*|mmcblk.*|dasd[a-z]*|bcache[0-9]+|nvme[0-9]+n[0-9]+) ' </proc/diskstats
if inpath dmsetup; then
echo '[dmsetup_info]'
dmsetup info -c --noheadings --separator ' ' -o name,devno,vg_name,lv_name
fi
if [ -d /dev/vx/dsk ]; then
echo '[vx_dsk]'
stat -c "%t %T %n" /dev/vx/dsk/*/*
fi
else
echo "<<<docker_container_diskstat${CGROUP_SECTION_SUFFIX}>>>"
echo "[time]"
get_epoch
if [ -n "${IS_CGROUP_V2}" ]; then
echo "[io.stat]"
cat "/sys/fs/cgroup/io.stat"
else
for F in io_service_bytes io_serviced; do
echo "[${F}]"
cat "/sys/fs/cgroup/blkio/blkio.throttle.${F}"
done
fi
echo "[names]"
for F in /sys/block/*; do
echo "${F##*/} $(cat "${F}/dev")"
done
fi
}
section_chrony() {
if inpath chronyc; then
# Force successful exit code. Otherwise section will be missing if daemon not running
#
# The "| cat" has been added for some kind of regression in RedHat 7.5. The
# SELinux rules shipped with that release were denying the chronyc call
# without cat.
_run_cached_internal "chrony" 30 120 200 20 "echo '<<<chrony>>>'; waitmax 5 chronyc -n tracking | cat || true"
fi
}
section_kernel() {
if [ -z "${IS_DOCKERIZED}" ] && [ -z "${IS_LXC_CONTAINER}" ]; then
echo '<<<kernel>>>'
get_epoch
cat /proc/vmstat /proc/stat
fi
}
section_ipmitool() {
if inpath ipmitool; then
_run_cached_internal "ipmi" 300 300 900 600 "echo '<<<ipmi:sep(124)>>>'; waitmax 300 ipmitool sensor list | grep -v 'command failed' | grep -v -E '^[^ ]+ na ' | grep -v ' discrete '"
# readable discrete sensor states
_run_cached_internal "ipmi_discrete" 300 300 900 600 "echo '<<<ipmi_discrete:sep(124)>>>'; waitmax 300 ipmitool sdr elist compact"
fi
}
section_ipmisensors() {
inpath ipmi-sensors && ls /dev/ipmi* >/dev/null || return
${MK_RUN_SYNC_PARTS} && echo '<<<ipmi_sensors>>>'
# Newer ipmi-sensors version have new output format; Legacy format can be used
if ipmi-sensors --help | grep -q legacy-output; then
IPMI_FORMAT="--legacy-output"
else
IPMI_FORMAT=""
fi
if ipmi-sensors --help | grep -q " \-\-groups"; then
IPMI_GROUP_OPT="-g"
else
IPMI_GROUP_OPT="-t"
fi
# At least with ipmi-sensors 0.7.16 this group is Power_Unit instead of "Power Unit"
_run_cached_internal "ipmi_sensors" 300 300 900 600 "echo '<<<ipmi_sensors>>>'; for class in Temperature Power_Unit Fan; do
ipmi-sensors ${IPMI_FORMAT} --sdr-cache-directory /var/cache ${IPMI_GROUP_OPT} \"\${class}\" | sed -e 's/ /_/g' -e 's/:_\?/ /g' -e 's@ \([^(]*\)_(\([^)]*\))@ \2_\1@'
# In case of a timeout immediately leave loop.
if [ $? = 255 ]; then break; fi
done"
}
section_md() {
echo '<<<md>>>'
cat /proc/mdstat
}
section_dm_raid() {
if inpath dmraid && DMSTATUS=$(waitmax 3 dmraid -r); then
echo '<<<dmraid>>>'
# Output name and status
waitmax 20 dmraid -s | grep -e ^name -e ^status
# Output disk names of the RAID disks
DISKS=$(echo "${DMSTATUS}" | cut -f1 -d":")
for disk in ${DISKS}; do
device=$(cat /sys/block/"$(basename "${disk}")"/device/model)
status=$(echo "${DMSTATUS}" | grep "^${disk}")
echo "${status} Model: ${device}"
done
fi
}
section_cfggen() {
if inpath cfggen; then
echo '<<<lsi>>>'
cfggen 0 DISPLAY |
grep -E '(Target ID|State|Volume ID|Status of volume)[[:space:]]*:' |
sed -e 's/ *//g' -e 's/:/ /'
fi
}
section_storcli() {
if inpath storcli; then
_storcli() { storcli "$@"; }
elif inpath storcli64; then
_storcli() { storcli64 "$@"; }
else
return 1
fi
echo '<<<storcli_physical_disks>>>'
_storcli /call/eall/sall show all
echo '<<<storcli_virtual_disks>>>'
_storcli /call/vall show all
echo '<<<storcli_cache_vault:sep(0)>>>'
_storcli /call/cv show all
# exit successfully, because storcli was in the path.
return 0
}
section_megaraid() {
section_storcli && return
if inpath MegaCli; then
MegaCli_bin="MegaCli"
elif inpath MegaCli64; then
MegaCli_bin="MegaCli64"
elif inpath megacli; then
MegaCli_bin="megacli"
else
return 1
fi
echo '<<<megaraid_pdisks>>>'
for part in $(${MegaCli_bin} -EncInfo -aALL -NoLog </dev/null |
sed -rn 's/:/ /g; s/[[:space:]]+/ /g; s/^ //; s/ $//; s/Number of enclosures on adapter ([0-9]+).*/adapter \1/g; /^(Enclosure|Device ID|adapter) [0-9]+$/ p'); do
[ "${part}" = adapter ] && printf "\n"
[ "${part}" = 'Enclosure' ] && printf "\ndev2enc"
printf " %s" "${part}"
done
echo
${MegaCli_bin} -PDList -aALL -NoLog </dev/null |
grep -E 'Enclosure|Raw Size|Slot Number|Device Id|Firmware state|Inquiry|Adapter|Predictive Failure Count'
echo '<<<megaraid_ldisks>>>'
${MegaCli_bin} -LDInfo -Lall -aALL -NoLog </dev/null | grep -E 'Size|State|Number|Adapter|Virtual'
echo '<<<megaraid_bbu>>>'
${MegaCli_bin} -AdpBbuCmd -GetBbuStatus -aALL -NoLog </dev/null | grep -v Exit
}
section_3ware_raid() {
if inpath tw_cli; then
for C in $(tw_cli show | awk 'NR < 4 { next } { print $1 }'); do
echo '<<<3ware_info>>>'
tw_cli "/${C}" show all | grep -E 'Model =|Firmware|Serial'
echo '<<<3ware_disks>>>'
tw_cli "/${C}" show drivestatus | grep -E 'p[0-9]' | sed "s/^/${C}\//"
echo '<<<3ware_units>>>'
tw_cli "/${C}" show unitstatus | grep -E 'u[0-9]' | sed "s/^/${C}\//"
done
fi
}
section_areca_raid() {
if inpath cli64; then
_run_cached_internal "arc_raid_status" 300 300 900 600 "echo '<<<arc_raid_status>>>'; cli64 rsf info | tail -n +3 | head -n -2"
fi
}
section_vbox_guest() {
echo '<<<vbox_guest>>>'
if inpath VBoxControl && lsmod | grep vboxguest >/dev/null 2>&1; then
(VBoxControl -nologo guestproperty enumerate || echo "ERROR") | cut -d, -f1,2
fi
}
section_openvpn() {
if [ -e /etc/openvpn/openvpn-status.log ]; then
echo '<<<openvpn_clients:sep(44)>>>'
sed -n -e '/CLIENT LIST/,/ROUTING TABLE/p' </etc/openvpn/openvpn-status.log |
sed -e 1,3d -e '$d'
fi
}
section_nvidia() {
if inpath nvidia-settings && [ -S /tmp/.X11-unix/X0 ]; then
echo '<<<nvidia>>>'
for var in GPUErrors GPUCoreTemp; do
DISPLAY=:0 waitmax 2 nvidia-settings -t -q ${var} | sed "s/^/${var}: /"
done
fi
}
section_drbd() {
if [ -z "${IS_DOCKERIZED}" ] && [ -z "${IS_LXC_CONTAINER}" ] && [ -e /proc/drbd ]; then
echo '<<<drbd>>>'
cat /proc/drbd
cat /sys/kernel/debug/drbd/resources/*/connections/*/0/proc_drbd 2>/dev/null
fi
}
section_heartbeat() {
if [ -S /var/run/heartbeat/crm/cib_ro ] || [ -S /var/run/crm/cib_ro ] || pgrep "^(crmd|pacemaker-contr)$" >/dev/null 2>&1; then
echo '<<<heartbeat_crm>>>'
TZ=UTC crm_mon -1 -r | grep -v ^$ | sed 's/^ //; /^\sResource Group:/,$ s/^\s//; s/^\s/_/g'
fi
if inpath cl_status; then
echo '<<<heartbeat_rscstatus>>>'
cl_status rscstatus
echo '<<<heartbeat_nodes>>>'
for NODE in $(cl_status listnodes); do
if [ "${NODE}" != "$(uname -n | tr '[:upper:]' '[:lower:]')" ]; then
STATUS=$(cl_status nodestatus "${NODE}")
printf "%s %s" "${NODE}" "${STATUS}"
for LINK in $(cl_status listhblinks "${NODE}" 2>/dev/null); do
printf " %s %s" "${LINK}" "$(cl_status hblinkstatus "${NODE}" "${LINK}")"
done
echo
fi
done
fi
}
## Postfix mailqueue monitoring
## Determine the number of mails and their size in several postfix mail queues
read_postfix_queue_dirs() {
postfix_queue_dir=${1}
if [ -n "${postfix_queue_dir}" ]; then
echo '<<<postfix_mailq>>>'
echo "[[[${2}]]]"
for queue in deferred active; do
count=$(find "${postfix_queue_dir}/${queue}" -type f | wc -l)
size=$(du -s "${postfix_queue_dir}/${queue}" | awk '{print $1 }')
if [ -z "${size}" ]; then
size=0
fi
if [ -z "${count}" ]; then
echo "Mail queue is empty"
else
echo "QUEUE_${queue} ${size} ${count}"
fi
done
fi
}
## Postfix status monitoring
read_postfix_master_pid() {
postfix_queue_dir=${1}
postfix_instance_name=${2}
echo "<<<postfix_mailq_status:sep(58)>>>"
if [ -e "${postfix_queue_dir}/pid/master.pid" ]; then
if [ -r "${postfix_queue_dir}/pid/master.pid" ]; then
postfix_pid=$(sed 's/ //g' <"${postfix_queue_dir}/pid/master.pid") # handle possible spaces in output
if ps -p "${postfix_pid}" -o cmd= | grep -q ".*postfix/\(s\?bin/\)\?/\?master.*"; then
echo "${postfix_instance_name}:the Postfix mail system is running:PID:${postfix_pid}"
else
echo "${postfix_instance_name}:PID file exists but instance is not running!"
fi
else
echo "${postfix_instance_name}:PID file exists but is not readable"
fi
else
echo "${postfix_instance_name}:the Postfix mail system is not running"
fi
}
## Postfix mailqueue monitoring
## Determine the number of mails and their size in several postfix mail queue
section_mailqueue() {
if inpath postconf; then
# Check if multi_instance_directories exists in main.cf and is not empty
# always takes the last entry, multiple entries possible
multi_instances_dirs=$(postconf -c /etc/postfix 2>/dev/null | grep ^multi_instance_directories | sed 's/.*=[[:space:]]*//g')
if [ -n "${multi_instances_dirs}" ]; then
for queue_dir in ${multi_instances_dirs}; do
if [ -n "${queue_dir}" ]; then
postfix_queue_dir=$(postconf -c "${queue_dir}" 2>/dev/null | grep ^queue_directory | sed 's/.*=[[:space:]]*//g')
read_postfix_queue_dirs "${postfix_queue_dir}" "${queue_dir}"
postfix_instance_name=$(postconf -c "${queue_dir}" -h multi_instance_name 2>/dev/null)
read_postfix_master_pid "${postfix_queue_dir}" "${postfix_instance_name}"
fi
done
fi
# Always check for the default queue. It can exist even if multiple instances are configured
read_postfix_queue_dirs "$(postconf -h queue_directory 2>/dev/null)" "default"
read_postfix_master_pid "$(postconf -h queue_directory 2>/dev/null)" "default"
elif [ -x /usr/sbin/ssmtp ]; then
echo '<<<postfix_mailq>>>'
mailq 2>&1 | sed 's/^[^:]*: \(.*\)/\1/' | tail -n 6
fi
# Check status of qmail mailqueue
if inpath qmail-qstat; then
echo "<<<qmail_stats>>>"
qmail-qstat
fi
# Nullmailer queue monitoring
if inpath nullmailer-send; then
echo '<<<nullmailer_mailq>>>'
if [ -d /var/spool/nullmailer/queue ]; then
COUNT=$(find /var/spool/nullmailer/queue -type f | wc -l)
SIZE=$(du -s /var/spool/nullmailer/queue | awk '{print $1 }')
echo "${SIZE} ${COUNT} deferred"
fi
if [ -d /var/spool/nullmailer/failed ]; then
COUNT=$(find /var/spool/nullmailer/failed -type f | wc -l)
SIZE=$(du -s /var/spool/nullmailer/failed | awk '{print $1 }')
echo "${SIZE} ${COUNT} failed"
fi
fi
}
section_omd() {
if inpath omd; then
# 60 is _probably_ the agents polling interval. Why would you use that??
_run_cached_internal "omd_status" 60 60 180 120 "echo '<<<omd_status>>>'; omd status --bare || true"
${MK_RUN_SYNC_PARTS} || return
echo '<<<mknotifyd:sep(0)>>>'
get_epoch
for statefile in /omd/sites/*/var/log/mknotifyd.state; do
if [ -e "${statefile}" ]; then
site=${statefile%/var/log*}
site=${site#/omd/sites/}
echo "[${site}]"
grep -v '^#' <"${statefile}"
fi
done
echo '<<<omd_apache:sep(124)>>>'
for statsfile in /omd/sites/*/var/log/apache/stats; do
if [ -e "${statsfile}" ]; then
site=${statsfile%/var/log*}
site=${site#/omd/sites/}
echo "[${site}]"
cat "${statsfile}"
: >"${statsfile}"
# prevent next section to fail caused by a missing newline at the end of the statsfile
echo
fi
done
_du_no_errors() {
if [ -e "${1}" ]; then
output=$(du -bs "$1") && printf "%s\n" "${output}"
else
printf "0 %s\n" "${1}"
fi
}
echo '<<<omd_diskusage:sep(0)>>>'
for sitedir in /omd/sites/*; do
site=${sitedir#/omd/sites/}
echo "[site ${site}]"
_du_no_errors "$sitedir"
_du_no_errors "$sitedir/var/log"
_du_no_errors "$sitedir/var/check_mk/rrd"
_du_no_errors "$sitedir/var/pnp4nagios/"
_du_no_errors "$sitedir/tmp/"
_du_no_errors "$sitedir/local/"
_du_no_errors "$sitedir/var/check_mk/agents/"
_du_no_errors "$sitedir/var/mkeventd/history/"
_du_no_errors "$sitedir/var/check_mk/core/"
_du_no_errors "$sitedir/var/check_mk/inventory_archive/"
done
echo '<<<omd_info:sep(59)>>>'
echo '[versions]'
echo 'version;number;edition;demo'
for versiondir in /omd/versions/*; do
version=${versiondir#/omd/versions/}
# filter out special directory 'default'
if [ "${version}" = "default" ]; then
continue
fi
number=${version}
demo="0"
if [ "${version##*.}" = "demo" ]; then
number=${version%.demo}
demo="1"
fi
edition=${number##*.}
number=${number%.*}
echo "${version};${number};${edition};${demo}"
done
echo '[sites]'
echo 'site;used_version;autostart'
for sitedir in /omd/sites/*; do
site=${sitedir#/omd/sites/}
used_version=$(readlink "${sitedir}"/version)
used_version=${used_version##*/}
autostart="0"
if grep -q "CONFIG_AUTOSTART[[:blank:]]*=[[:blank:]]*'on'" "${sitedir}"/etc/omd/site.conf; then
autostart="1"
fi
echo "${site};${used_version};${autostart}"
done
fi
}
section_zpool() {
if inpath zpool; then
echo "<<<zpool_status>>>"
zpool status -x
echo "<<<zpool>>>"
zpool list
fi
}
section_veritas_cluster() {
if [ -x /opt/VRTSvcs/bin/haclus ]; then
echo "<<<veritas_vcs>>>"
vcshost=$(hostname | cut -d. -f1)
waitmax -s 9 2 /opt/VRTSvcs/bin/haclus -display -localclus | grep -e ClusterName -e ClusState
waitmax -s 9 2 /opt/VRTSvcs/bin/hasys -display -attribute SysState
waitmax -s 9 2 /opt/VRTSvcs/bin/hagrp -display -sys "${vcshost}" -attribute State -localclus
waitmax -s 9 2 /opt/VRTSvcs/bin/hares -display -sys "${vcshost}" -attribute State -localclus
waitmax -s 9 2 /opt/VRTSvcs/bin/hagrp -display -attribute TFrozen -attribute Frozen
fi
}
section_omd_core() {
(
cd /omd/sites || return
# The files within a site are site-user writable! Therefore we must not use them!
# The version files are only root writable so we can use them instead.
site_version() {
printf "%s" "$(realpath "${1}/version" | sed 's|.*/||')"
}
site_cmd() {
# DO NOT ACCESS /omd/sites/${site}/bin/cmd directly.
# bin might point anywhere -> priv escalation.
printf "/omd/versions/%s/bin/%s" "$(site_version "${1}")" "${2}"
}
site_lib() {
printf "/omd/versions/%s/lib" "$(site_version "${1}")"
}
waitmax_for_unixcat_with_site_ld_library_path() {
LD_LIBRARY_PATH="$(site_lib "${2}"):${LD_LIBRARY_PATH}" waitmax "${1}" "$(site_cmd "${2}" unixcat)" "/omd/sites/${2}/tmp/run/${3}"
}
echo '<<<livestatus_status:sep(59)>>>'
for site in *; do
if [ -S "/omd/sites/${site}/tmp/run/live" ]; then
echo "[${site}]"
echo "GET status" |
waitmax_for_unixcat_with_site_ld_library_path 3 "${site}" "live"
fi
done
echo '<<<livestatus_ssl_certs:sep(124)>>>'
for site in *; do
echo "[${site}]"
for PEM_PATH in "/omd/sites/${site}/etc/ssl/ca.pem" "/omd/sites/${site}/etc/ssl/sites/${site}.pem"; do
if [ -f "${PEM_PATH}" ]; then
CERT_DATE=$(openssl x509 -enddate -noout -in "${PEM_PATH}" | sed 's/notAfter=//')
echo "${PEM_PATH}|$(date --date="${CERT_DATE}" --utc +%s)"
fi
done
done
echo '<<<mkeventd_status:sep(0)>>>'
for site in *; do
if [ -S "/omd/sites/${site}/tmp/run/mkeventd/status" ]; then
echo "[\"${site}\"]"
(echo "GET status" && echo "OutputFormat: json") |
waitmax_for_unixcat_with_site_ld_library_path 3 "${site}" "mkeventd/status"
fi
done
echo '<<<cmk_site_statistics:sep(59)>>>'
for site in *; do
if [ -S "/omd/sites/${site}/tmp/run/live" ]; then
echo "[${site}]"
waitmax_for_unixcat_with_site_ld_library_path 5 "${site}" "live" <<LimitString
GET hosts
Stats: state = 0
Stats: scheduled_downtime_depth = 0
StatsAnd: 2
Stats: state = 1
Stats: scheduled_downtime_depth = 0
StatsAnd: 2
Stats: state = 2
Stats: scheduled_downtime_depth = 0
StatsAnd: 2
Stats: scheduled_downtime_depth > 0
Filter: custom_variable_names < _REALNAME
LimitString
waitmax_for_unixcat_with_site_ld_library_path 5 "${site}" "live" <<LimitString
GET services
Stats: state = 0
Stats: scheduled_downtime_depth = 0
Stats: host_scheduled_downtime_depth = 0
Stats: host_state = 0
Stats: host_has_been_checked = 1
StatsAnd: 5
Stats: scheduled_downtime_depth > 0
Stats: host_scheduled_downtime_depth > 0
StatsOr: 2
Stats: scheduled_downtime_depth = 0
Stats: host_scheduled_downtime_depth = 0
Stats: host_state != 0
StatsAnd: 3
Stats: state = 1
Stats: scheduled_downtime_depth = 0
Stats: host_scheduled_downtime_depth = 0
Stats: host_state = 0
Stats: host_has_been_checked = 1
StatsAnd: 5
Stats: state = 3
Stats: scheduled_downtime_depth = 0
Stats: host_scheduled_downtime_depth = 0
Stats: host_state = 0
Stats: host_has_been_checked = 1
StatsAnd: 5
Stats: state = 2
Stats: scheduled_downtime_depth = 0
Stats: host_scheduled_downtime_depth = 0
Stats: host_state = 0
Stats: host_has_been_checked = 1
StatsAnd: 5
Filter: host_custom_variable_names < _REALNAME
LimitString
fi
done
)
}
section_mkbackup() {
if ls /omd/sites/*/var/check_mk/backup/*.state >/dev/null 2>&1; then
echo "<<<mkbackup>>>"
for F in /omd/sites/*/var/check_mk/backup/*.state; do
SITE=${F#/*/*/*}
SITE=${SITE%%/*}
JOB_IDENT=${F%.state}
JOB_IDENT=${JOB_IDENT##*/}
if [ "${JOB_IDENT}" != "restore" ]; then
echo "[[[site:${SITE}:${JOB_IDENT}]]]"
cat "${F}"
echo
fi
done
fi
# Collect states of configured CMA backup jobs
if inpath mkbackup && ls /var/lib/mkbackup/*.state >/dev/null 2>&1; then
echo "<<<mkbackup>>>"
for F in /var/lib/mkbackup/*.state; do
JOB_IDENT=${F%.state}
JOB_IDENT=${JOB_IDENT##*/}
if [ "${JOB_IDENT}" != "restore" ]; then
echo "[[[system:${JOB_IDENT}]]]"
cat "${F}"
echo
fi
done
fi
}
section_thermal() {
if [ -z "${IS_DOCKERIZED}" ] && [ -z "${IS_LXC_CONTAINER}" ] && ls /sys/class/thermal/thermal_zone* >/dev/null 2>&1; then
echo '<<<lnx_thermal:sep(124)>>>'
for F in /sys/class/thermal/thermal_zone*; do
line="${F##*/}"
if [ ! -e "${F}/mode" ]; then
line="${line}|-"
else
line="${line}|$(cat "${F}"/mode)"
fi
line="${line}|$(cat "${F}/type")|$(cat "${F}/temp")"
for G in "${F}"/trip_point_*_temp; do
line="${line}|$(cat "$G")|$(cat "${G/%temp/type}")"
done
echo "$line"
done
fi
}
section_libelle() {
if inpath trd; then
echo "<<<libelle_business_shadow:sep(58)>>>"
trd -s
fi
}
section_http_accelerator() {
if inpath varnishstat; then
echo "<<<varnish>>>"
varnishstat -1
fi
}
section_proxmox() {
if inpath pvecm; then
echo "<<<pvecm_status:sep(58)>>>"
pvecm status
echo "<<<pvecm_nodes>>>"
pvecm nodes
fi
}
section_haproxy() {
for HAPROXY_SOCK in /run/haproxy/admin.sock /var/lib/haproxy/stats; do
if [ -r "${HAPROXY_SOCK}" ] && inpath socat; then
echo "<<<haproxy:sep(44)>>>"
echo "show stat" | socat - "UNIX-CONNECT:${HAPROXY_SOCK}"
fi
done
}
#
# BEGIN COMMON AGENT CODE
#
section_job() {
# Get statistics about monitored jobs.
_cat_files() {
# read file names from stdin and write like `head -n -0 -v file`
while read -r file; do
printf "==> %s <==\n" "${file##./}"
cat "${file}"
done
}
(
cd "${MK_VARDIR}/job" 2>/dev/null || return
printf "<<<job>>>\n"
for user in *; do
(
cd "${user}" 2>/dev/null || return # return from subshell only
# This folder is owned (and thus writable) by the user that ran the jobs.
# The agent (root) must not read files that are not owned by the user.
# This prevents symlink or hardlink attacks.
find -L . -type f -user "${user}" | _cat_files
)
done
)
}
section_fileinfo() {
# fileinfo check: put patterns for files into /etc/check_mk/fileinfo.cfg
perl -e '
use File::Glob "bsd_glob";
my @patterns = ();
foreach (bsd_glob("$ARGV[0]/fileinfo.cfg"), bsd_glob("$ARGV[0]/fileinfo.d/*")) {
open my $handle, "<", $_ or next;
while (<$handle>) {
chomp;
next if /^\s*(#|$)/;
my $pattern = $_;
$pattern =~ s/\$DATE:(.*?)\$/substr(`date +"$1"`, 0, -1)/eg;
push @patterns, $pattern;
}
warn "error while reading $_: $!\n" if $!;
close $handle;
}
exit if ! @patterns;
my $file_stats = "";
foreach (@patterns) {
foreach (bsd_glob("$_")) {
if (! -f) {
$file_stats .= "$_|missing\n" if ! -d;
} elsif (my @infos = stat) {
$file_stats .= "$_|ok|$infos[7]|$infos[9]\n";
} else {
$file_stats .= "$_|stat failed: $!\n";
}
}
}
print "<<<fileinfo:sep(124)>>>\n", time, "\n[[[header]]]\nname|status|size|time\n[[[content]]]\n$file_stats";
' -- "${MK_CONFDIR}"
}
#
# END COMMON AGENT CODE
#
# ntpq helper function
get_ntpq() {
inpath ntpq || return 1
_run_cached_internal "ntp" 30 120 200 20 "echo '<<<ntp>>>'; waitmax 5 ntpq -np | sed -e 1,2d -e 's/^\(.\)/\1 /' -e 's/^ /%/' || true"
}
section_timesyncd() {
if [ -n "${IS_DOCKERIZED}" ] || [ -n "${IS_LXC_CONTAINER}" ]; then
return 0
fi
inpath systemctl || return 1
inpath timedatectl || return 1
systemctl is-enabled systemd-timesyncd.service >/dev/null 2>&1 || return 1
# debian 10.8 uses ConditionFileIsExecutable to "disable" systemd-timedatectl when ntp is installed.
# The service is still enabled, but does not start timesyncd as the condition is not met.
(inpath ntpd || inpath openntpd || inpath chronyd || inpath VBoxService) && return 1 # we check the same condition as the systemd condition
timedatectl timesync-status >/dev/null 2>&1 || return 1
${MK_RUN_SYNC_PARTS} || return 0
echo "<<<timesyncd>>>"
timedatectl timesync-status
# /run/systemd/timesync/synchronized is a more reliable/the correct file to look at for > systemd v250
if [ -f "/run/systemd/timesync/synchronized" ]; then
get_file_mtime /run/systemd/timesync/synchronized | awk '{print "[[["$1"]]]"}'
else
get_file_mtime /var/lib/systemd/timesync/clock | awk '{print "[[["$1"]]]"}'
fi
echo "<<<timesyncd_ntpmessage:sep(10)>>>"
timedatectl show-timesync | awk '/NTPMessage/{print $0}'
timedatectl show | awk '/Timezone/{print $0}'
return 0 # intended not to execute section_ntp even in the case where get_file_mtime fails
}
section_ntp() {
if [ -n "${IS_DOCKERIZED}" ] || [ -n "${IS_LXC_CONTAINER}" ]; then
return 0
fi
# First we try to identify if we're beholden to systemd
if inpath systemctl; then
# shellcheck disable=SC2016
if [ "$(systemctl | awk '/ntp.service|ntpd.service|ntpsec.service/{print $3; exit}')" = "active" ]; then
# remove heading, make first column space separated
get_ntpq
return
fi
fi
# If we get to this point, we attempt via classic ntp daemons (ntpq required)
if inpath ntpq; then
# Try to determine status via /etc/init.d
# This might also be appropriate for AIX, Solaris and others
for _ntp_daemon in ntp ntpd openntpd; do
# Check for a service script
if [ -x /etc/init.d/"${_ntp_daemon}" ]; then
# If the status returns 0, we assume we have a running service
if /etc/init.d/"${_ntp_daemon}" status >/dev/null 2>&1; then
get_ntpq
return
fi
fi
done
unset -v _ntp_daemon
# For other systems such as Slackware
if [ -x "/etc/rc.d/rc.ntpd" ]; then
get_ntpq
return
fi
fi
}
run_real_time_checks() {
RTC_PLUGINS=""
# shellcheck source=agents/cfg_examples/real_time_checks.cfg
. "${MK_CONFDIR}/real_time_checks.cfg" 2>/dev/null || return
if [ -z "${RTC_SECRET}" ]; then
define_optionally_encrypt "no"
else
inpath openssl || {
echo "ERROR: openssl command is missing, but encryption is requested. Not sending real-time data." >&2
return
}
define_optionally_encrypt "yes"
fi
for trigger in "${MK_VARDIR}/rtc_remotes/"?*; do
# no such file => no expansion of ?* => nothing to do
# braces are needed so run_real_time_checks_for_remote can be forked away
# otherwise async execution of check plugins is held off by activated realtime checks.
[ -e "${trigger}" ] && { run_real_time_checks_for_remote "${trigger}" "${RTC_SECRET}" >/dev/null & }
done
}
_rt_pidfile_is_mine() {
[ "$(cat "${1}" 2>/dev/null)" = "$$" ]
}
_rt_pidfile_is_alive() {
[ "$(("$(get_epoch)" - "$(get_file_atime "${1}")"))" -le "${RTC_TIMEOUT}" ]
}
_rt_timestamp() {
get_epoch | tr -d '\n'
}
_rt_sendudp() {
# concatenate the output of all commands to a single udp packet
dd bs=9999 iflag=fullblock 2>/dev/null >"/dev/udp/${1}/${2}"
}
# Implements Real-Time Check feature of the Checkmk agent which can send
# some section data in 1 second resolution. Useful for fast notifications and
# detailed graphing (if you configure your RRDs to this resolution).
# 2 bytes: protocol version
# 10 bytes: timestamp
# rest: encrypted data
# Be aware of maximum packet size.
run_real_time_checks_for_remote() {
pidfile="${1}"
secret="${2}"
remote="${pidfile##*/rtc_remotes/}"
# have I already started for this remote?
_rt_pidfile_is_mine "${pidfile}" && return
echo $$ >"${pidfile}"
while true; do
_rt_pidfile_is_mine "${pidfile}" || return
_rt_pidfile_is_alive "${pidfile}" || {
rm "${pidfile}"
return
}
for section in ${RTC_SECTIONS}; do
section_"${section}" |
optionally_encrypt "${secret}" "$(_rt_timestamp)" |
_rt_sendudp "${remote}" "${RTC_PORT}"
done
# Plugins
cd "${PLUGINSDIR}" || continue
for script in ${RTC_PLUGINS}; do
is_valid_plugin "${script}" || continue
plugin_interpreter=$(get_plugin_interpreter "${script}") || continue
"${plugin_interpreter}" "${script}" |
optionally_encrypt "${secret}" "$(_rt_timestamp)" |
_rt_sendudp "${remote}" "${RTC_PORT}"
done
sleep 1
done
}
#
# BEGIN COMMON AGENT CODE
#
run_cached() {
# Compatibility wrapper for plugins that might use run_cached.
# We should have never exposed this as quasi API.
NAME="${1}"
MAXAGE="${2}"
REFRESH_INTERVAL="${3}"
shift 3
OUTPUT_TIMEOUT=$((MAXAGE * 3))
CREATION_TIMEOUT=$((MAXAGE * 2))
_run_cached_internal "${NAME}" "${REFRESH_INTERVAL}" "${MAXAGE}" "${OUTPUT_TIMEOUT}" "${CREATION_TIMEOUT}" "$@"
}
_run_cached_internal() {
# Run a command asynchronous by use of a cache file.
# Usage: _run_cached_internal NAME REFRESH_INTERVAL MAXAGE OUTPUT_TIMEOUT OUTPUT_TIMEOUT CREATION_TIMEOUT [COMMAND ...]
# Note that while multiple COMMAND arguments are considered, they are evaluated in a string.
# This means that extra escaping is required.
# For example:
# To run a cat command every two minutes, considering the created data valid for one three minutes,
# send the created data for four minutes and allowing the command to run for 12 minutes, you'll have to call
#
# _run_cached_interal "my_file_content" 120 180 240 720 "cat \"My File\""
#
# Mind the escaping...
NAME="${1}"
# name of the section (also used as cache file name)
REFRESH_INTERVAL="${2}"
# threshold in seconds when the cache file needs to be regenerated
MAXAGE="${3}"
# maximum cache livetime in seconds
OUTPUT_TIMEOUT="${4}"
# threshold in seconds for how long the cache file will be output (regardless of whether it is outdated)
CREATION_TIMEOUT="${5}"
# threshold in seconds for how long the process is allowed to be running before it is killed (see below for details)
shift 5
# $* is now the command to run
if ${DISABLE_CACHING:-false}; then
# We need the re-splitting to be compatible with the caching case, so:
# shellcheck disable=SC2068
$@
return
fi
[ -d "${MK_VARDIR}/cache" ] || mkdir -p "${MK_VARDIR}/cache"
CACHEFILE="${MK_VARDIR}/cache/${NAME}.cache"
FAIL_REPORT_FILE="${SPOOLDIR}/${NAME}.cachefail"
NOW="$(get_epoch)"
MTIME="$(get_file_mtime "${CACHEFILE}" 2>/dev/null)" || MTIME=0
if ${MK_RUN_SYNC_PARTS}; then
if [ -s "${CACHEFILE}" ] && [ $((NOW - MTIME)) -le "${OUTPUT_TIMEOUT}" ]; then
# Output the file (if it is not too outdated)
CACHE_INFO="cached(${MTIME},${MAXAGE})"
# prefix or insert cache info, unless already present.
# WATCH OUT: AIX does not allow us to pass this as a single '-e' option!
if [ "${NAME%%_*}" = "local" ] || [ "${NAME%%_*}" = "mrpe" ]; then
sed -e '/^<<<.*>>>/{p;d;}' -e '/^cached([0-9]*,[0-9]*) /{p;d;}' -e "s/^/${CACHE_INFO} /" "${CACHEFILE}"
else
sed -e '/^<<<.*\(:cached(\).*>>>/{p;d;}' -e 's/^<<<\([^>]*\)>>>$/<<<\1:'"${CACHE_INFO}"'>>>/' "${CACHEFILE}"
fi
fi
fi
if ${MK_RUN_ASYNC_PARTS}; then
# Kill the process if it is running too long (cache file not accessed for more than CREATION_TIMEOUT seconds).
# If killing succeeds, remove CACHFILE.new.PID.
# Write info about the timed out process and the kill attempt to the SPOOLDIR.
# It will be reported to the server in the next (synchronous) agent execution.
# The file will be deleted as soon as the plugin/local check is functional again.
# Do not output the file here, it will interrupt the local and mrpe sections, as well as any other
# partially cached section.
for cfile in "${CACHEFILE}.new."*; do
[ -e "${cfile}" ] || break # no match
TRYING_SINCE="$(get_file_atime "${cfile}")"
[ -n "${TRYING_SINCE}" ] || break # race condition: file vanished
if [ $((NOW - TRYING_SINCE)) -ge "${CREATION_TIMEOUT}" ]; then
{
printf "<<<checkmk_cached_plugins:sep(124)>>>\n"
pid="${cfile##*.new.}"
printf "timeout|%s|%s|%s\n" "${NAME}" "${CREATION_TIMEOUT}" "${pid}"
kill -9 "${pid}" >/dev/null 2>&1 && sleep 2 # TODO: what about child processes?
if [ -n "$(ps -o args= -p "${pid}")" ]; then
printf "killfailed|%s|%s|%s\n" "${NAME}" "${CREATION_TIMEOUT}" "${pid}"
else
rm -f "${cfile}"
fi
} >"${FAIL_REPORT_FILE}" 2>&1
fi
done
# This does the right thing, regardless whether the pattern matches!
_cfile_in_use() {
for cfile in "${CACHEFILE}.new."*; do
printf "%s\n" "${cfile}"
break
done
}
# Time to refresh cache file and new job not yet running?
if [ $((NOW - MTIME)) -gt "${REFRESH_INTERVAL}" ] && [ ! -e "$(_cfile_in_use)" ]; then
# Start it. If the command fails the output is thrown away
cat <<HERE | nohup "${CURRENT_SHELL}" >/dev/null 2>&1 &
eval '${MK_DEFINE_LOG_SECTION_TIME}'
exec > "${CACHEFILE}.new.\$\$" || exit 1
$* && mv -f "${CACHEFILE}.new.\$\$" "${CACHEFILE}" && rm -f "${FAIL_REPORT_FILE}" || rm -f "${CACHEFILE}.new.\$\$"
HERE
fi
fi
unset NAME MAXAGE CREATION_TIMEOUT REFRESH_INTERVAL CACHEFILE NOW MTIME CACHE_INFO TRYING_SINCE OUTPUT_TIMEOUT
}
run_local_checks() {
cd "${LOCALDIR}" || return
if ${MK_RUN_SYNC_PARTS}; then
echo '<<<local:sep(0)>>>'
for script in ./*; do
if is_valid_plugin "${script}"; then
_log_section_time "${script}"
fi
done
fi
# Call some local checks only every X'th second
for script in [1-9]*/*; do
if is_valid_plugin "${script}"; then
interval="${script%/*}"
_run_cached_internal "local_${script##*/}" "${interval}" "${interval}" $((interval * 3)) $((interval * 2)) "_log_section_time '${script}'"
fi
done
}
run_spooler() {
(
cd "${SPOOLDIR}" 2>/dev/null || return
now=$(get_epoch)
for file in *; do
[ "${file}" != "*" ] || return
# If prefixed with a number, then that is the maximum age in seconds.
# If the file is older than that, it is ignored.
maxage="${file%%[^0-9]*}"
if [ "${maxage}" ]; then
mtime=$(get_file_mtime "${file}")
[ $((now - mtime)) -le "${maxage}" ] || continue
fi
cat "${file}"
done
)
}
get_plugin_interpreter() {
# Return the interpreter (or "") for the plugin file (or fail).
# We return the interpreter instead of wrapping the call, so we don't
# have to export the function (which is not portable).
# normalize input
agent_plugin="${1#./}"
extension="${agent_plugin##*.}"
filename="${agent_plugin%.*}"
# Execute all non python plugins with ./foo
if [ "${extension}" != "py" ]; then
return 0
fi
if [ "${filename#"${filename%??}"}" != "_2" ]; then
if [ -n "${NO_PYTHON}" ] || [ -n "${WRONG_PYTHON_COMMAND}" ]; then
section_checkmk_failed_plugin "${agent_plugin}"
return 1
fi
if [ -n "${PYTHON3}" ]; then
echo "${PYTHON3}"
return 0
fi
if [ ! -e "${filename}_2.py" ]; then
section_checkmk_failed_plugin "${agent_plugin} (Missing Python 3 installation)"
return 1
fi
# no python3 found, but python2 plugin file present
return 1
fi
if [ -x "${filename%??}.py" ] && [ -n "${PYTHON3}" ]; then
return 1
fi
if [ -n "${PYTHON2}" ]; then
echo "${PYTHON2}"
return 0
fi
section_checkmk_failed_plugin "${agent_plugin} (missing Python 2 installation)"
return 1
}
run_plugins() {
cd "${PLUGINSDIR}" || return
if ${MK_RUN_SYNC_PARTS}; then
for script in ./*; do
if is_valid_plugin "${script}"; then
if plugin_interpreter=$(get_plugin_interpreter "${script}"); then
# SC2086: We don't want to quote, interpreter is "nothing" if empty, not "''"
# shellcheck disable=SC2086
_log_section_time ${plugin_interpreter} "${script}"
fi
fi
done
fi
# Call some plugins only every X'th second
for script in [1-9]*/*; do
if is_valid_plugin "${script}"; then
if plugin_interpreter=$(get_plugin_interpreter "${script}"); then
interval="${script%/*}"
# shellcheck disable=SC2086
_run_cached_internal "plugins_${script##*/}" "${interval}" "${interval}" $((interval * 3)) $((interval * 2)) _log_section_time ${plugin_interpreter} "${script}"
fi
fi
done
}
_non_comment_lines() {
grep -Ev '^[[:space:]]*($|#)' "${1}"
}
_mrpe_get_interval() {
echo "${1}" | grep -E '^\([^)]*\)' | sed -n 's/^.*interval=\([^:)]*\).*$/\1/p'
}
_mrpe_normalize_spaces() {
# watch out:
# * [:blank:] does not include \t on AIX
# * [:space:] does include \n on Linux
tr -s '\t' ' '
}
run_remote_plugins() {
configfile="${1}"
prefix="${2}"
[ -f "${configfile}" ] || return
_non_comment_lines "${configfile}" | _mrpe_normalize_spaces | while read -r descr rest; do
interval="$(_mrpe_get_interval "${rest}")"
cmdline="${rest#\(*\) }"
if [ -n "${prefix}" ]; then
cmdline="${prefix} '${cmdline}'"
fi
if [ -z "${interval}" ]; then
${MK_RUN_SYNC_PARTS} && run_mrpe "${descr}" "${cmdline}"
else
# Sourcing the agent here is not very performant, but we need 'run_mrpe', and not all shells support exporting of functions.
_run_cached_internal "mrpe_${descr}" "${interval}" "${interval}" $((interval * 3)) $((interval * 2)) "MK_SOURCE_AGENT=yes . '${0}'; run_mrpe \"${descr}\" \"${cmdline}\""
fi
done
}
run_mrpe() {
descr="${1}"
shift
PLUGIN="${1%% *}"
OUTPUT="$(eval "${MK_DEFINE_LOG_SECTION_TIME}; _log_section_time $*")"
STATUS="$?"
printf "<<<mrpe>>>\n"
printf "(%s) %s %s %s" "${PLUGIN##*/}" "${descr}" "${STATUS}" "${OUTPUT}" | tr \\n \\1
printf "\n"
unset descr PLUGIN OUTPUT STATUS
}
#
# END COMMON AGENT CODE
#
run_runas_executor() {
[ -f "${MK_CONFDIR}/runas.cfg" ] || return
_non_comment_lines "${MK_CONFDIR}/runas.cfg" | while read -r type user configfile; do
prefix=""
if [ "${user}" != "-" ]; then
prefix="su ${user} -c"
fi
# mrpe includes
if [ "${type}" = "mrpe" ]; then
run_remote_plugins "${configfile}" "${prefix}"
# local and plugin includes
elif [ "${type}" = "local" ] || [ "${type}" = "plugin" ]; then
if ${MK_RUN_SYNC_PARTS}; then
if [ "${type}" = "local" ]; then
echo "<<<local:sep(0)>>>"
fi
find "${configfile}" -executable -type f |
while read -r filename; do
if [ -n "${prefix}" ]; then
# SC2086: We don't want to quote since prefix should not be treated as a
# single string but as multiple arguments passed to _log_section_time
# shellcheck disable=SC2086
_log_section_time ${prefix} "${filename}"
else
_log_section_time "${filename}"
fi
done
fi
fi
done
}
run_purely_synchronous_sections() {
_log_section_time section_checkmk
_log_section_time section_cmk_agent_ctl_status
[ -z "${MK_SKIP_CHECKMK_AGENT_PLUGINS}" ] && _log_section_time section_checkmk_agent_plugins
[ -z "${MK_SKIP_LABELS}" ] && _log_section_time section_labels
[ -z "${MK_SKIP_DF}" ] && _log_section_time section_df
[ -z "${MK_SKIP_SYSTEMD}" ] && _log_section_time section_systemd
# Filesystem usage for ZFS
[ -z "${MK_SKIP_ZFS}" ] && _log_section_time section_zfs
# Check NFS mounts by accessing them with stat -f (System
# call statfs()). If this lasts more then 2 seconds we
# consider it as hanging. We need waitmax.
[ -z "${MK_SKIP_NFS_MOUNTS}" ] && _log_section_time section_nfs_mounts "/proc/mounts"
# Check mount options. Filesystems may switch to 'ro' in case
# of a read error.
[ -z "${MK_SKIP_MOUNTS}" ] && _log_section_time section_mounts
[ -z "${MK_SKIP_PS}" ] && _log_section_time section_ps
# Memory usage
[ -z "${MK_SKIP_MEM}" ] && _log_section_time section_mem
# Load and number of processes
[ -z "${MK_SKIP_CPU}" ] && _log_section_time section_cpu
# Uptime
[ -z "${MK_SKIP_UPTIME}" ] && _log_section_time section_uptime
# New variant: Information about speed and state in one section
[ -z "${MK_SKIP_LNX_IF}" ] && _log_section_time section_lnx_if
# Current state of bonding interfaces
[ -z "${MK_SKIP_BONDING_IF}" ] && _log_section_time section_bonding_interfaces
# Same for Open vSwitch bonding
[ -z "${MK_SKIP_VSWITCH_BONDING}" ] && _log_section_time section_vswitch_bonding
# Number of TCP connections in the various states
[ -z "${MK_SKIP_TCP}" ] && _log_section_time section_tcp
# Linux Multipathing
[ -z "${MK_SKIP_MULTIPATHING}" ] && _log_section_time section_multipathing
# Performancecounter Platten
[ -z "${MK_SKIP_DISKSTAT}" ] && _log_section_time section_diskstat
# Performancecounter Kernel
[ -z "${MK_SKIP_KERNEL}" ] && _log_section_time section_kernel
# RAID status of Linux software RAID
[ -z "${MK_SKIP_MD}" ] && _log_section_time section_md
# RAID status of Linux RAID via device mapper
[ -z "${MK_SKIP_DM_RAID}" ] && _log_section_time section_dm_raid
# RAID status of LSI controllers via cfggen
[ -z "${MK_SKIP_CFGGEN}" ] && _log_section_time section_cfggen
# RAID status of LSI MegaRAID controller via StorCLI or MegaCli. You can download that tool from:
# https://docs.broadcom.com/docs/007.2007.0000.0000_Unified_StorCLI.zip
[ -z "${MK_SKIP_MEGARAID}" ] && _log_section_time section_megaraid
# RAID status of 3WARE disk controller (by Radoslaw Bak)
[ -z "${MK_SKIP_THREE_WARE_RAID}" ] && _log_section_time section_3ware_raid
# VirtualBox Guests. Section must always been output. Otherwise the
# check would not be executed in case no guest additions are installed.
# And that is something the check wants to detect
[ -z "${MK_SKIP_VBOX_GUEST}" ] && _log_section_time section_vbox_guest
# OpenVPN Clients. Currently we assume that the configuration # is in
# /etc/openvpn. We might find a safer way to find the configuration later.
[ -z "${MK_SKIP_OPENVPN}" ] && _log_section_time section_openvpn
[ -z "${MK_SKIP_NVIDIA}" ] && _log_section_time section_nvidia
[ -z "${MK_SKIP_DRBD}" ] && _log_section_time section_drbd
# Heartbeat monitoring
# Different handling for heartbeat clusters with and without CRM
# for the resource state
[ -z "${MK_SKIP_HEARTBEAT}" ] && _log_section_time section_heartbeat
[ -z "${MK_SKIP_MAILQUEUE}" ] && _log_section_time section_mailqueue
## Check status of OMD sites and Checkmk Notification spooler
# Welcome the ZFS check on Linux
# We do not endorse running ZFS on linux if your vendor doesnt support it ;)
# check zpool status
[ -z "${MK_SKIP_ZPOOL}" ] && _log_section_time section_zpool
# Veritas Cluster Server
# Software is always installed in /opt/VRTSvcs.
# Secure mode must be off to allow root to execute commands
[ -z "${MK_SKIP_VERITAS}" ] && _log_section_time section_veritas_cluster
## Fileinfo-Check: put patterns for files into /etc/check_mk/fileinfo.cfg
[ -z "${MK_SKIP_FILEINFO}" ] && _log_section_time section_fileinfo
# Get stats about OMD monitoring cores running on this machine.
# Since cd is a shell builtin the check does not affect the performance
# on non-OMD machines.
[ -z "${MK_SKIP_OMD_CORES}" ] && _log_section_time section_omd_core
# Collect states of configured Checkmk site backup jobs
_log_section_time section_mkbackup
# Get statistics about monitored jobs. Below the job directory there
# is a sub directory per user that ran a job. That directory must be
# owned by the user so that a symlink or hardlink attack for reading
# arbitrary files can be avoided.
[ -z "${MK_SKIP_JOB}" ] && _log_section_time section_job
# Gather thermal information provided e.g. by acpi
# At the moment only supporting thermal sensors
[ -z "${MK_SKIP_THERMAL}" ] && _log_section_time section_thermal
# Libelle Business Shadow
[ -z "${MK_SKIP_LIBELLE}" ] && _log_section_time section_libelle
# HTTP Accelerator Statistics
[ -z "${MK_SKIP_HTTP_ACCELERATOR}" ] && _log_section_time section_http_accelerator
# Proxmox Cluster
[ -z "${MK_SKIP_PROXMOX}" ] && _log_section_time section_proxmox
[ -z "${MK_SKIP_HAPROXY}" ] && _log_section_time section_haproxy
}
run_partially_asynchronous_sections() {
# Time synchronization with Chrony
[ -z "${MK_SKIP_CHRONY}" ] && _log_section_time section_chrony
# Hardware sensors via IPMI (need ipmitool)
[ -z "${MK_SKIP_IPMITOOL}" ] && _log_section_time section_ipmitool
# IPMI data via ipmi-sensors (of freeipmi). Please make sure, that if you
# have installed freeipmi that IPMI is really support by your hardware.
[ -z "${MK_SKIP_IPMISENSORS}" ] && _log_section_time section_ipmisensors
# RAID controllers from areca (Taiwan)
# cli64 can be found at ftp://ftp.areca.com.tw/RaidCards/AP_Drivers/Linux/CLI/
[ -z "${MK_SKIP_ARECA}" ] && _log_section_time section_areca_raid
## Check status of OMD sites and Checkmk Notification spooler
[ -z "${MK_SKIP_OMD}" ] && _log_section_time section_omd
if [ -z "${MK_SKIP_TIMESYNCHRONISATION}" ]; then
_log_section_time section_timesyncd || _log_section_time section_ntp
fi
}
main_setup() {
set_up_remote
# close stdin
exec </dev/null
set_up_process_commandline_arguments "$@"
# close stderr unless explicitly configured to stay open
if "${DISABLE_STDERR:-true}"; then
exec 2>/dev/null
fi
set_up_get_epoch
set_up_current_shell
set_variable_defaults
announce_remote # needs MK_VARDIR!
PATH="$(set_up_path "${PATH}")"
set_up_profiling
unset_locale
detect_python
detect_container_environment
set_up_encryption
set_up_disabled_sections
export_utility_functions
}
main_sync_parts() {
run_purely_synchronous_sections
_log_section_time run_spooler
}
main_mixed_parts() {
run_partially_asynchronous_sections
run_remote_plugins "${MK_CONFDIR}/mrpe.cfg" ""
run_runas_executor
run_local_checks
run_plugins
}
main_async_parts() {
# Start new liveupdate process in background
# Starting a new live update process will terminate the old one automatically after
# max. 1 sec.
run_real_time_checks
}
main_finalize_sync() {
finalize_profiling
}
#
# BEGIN COMMON AGENT CODE
#
main() {
while true; do
main_setup "$@"
(
${MK_RUN_SYNC_PARTS} && main_sync_parts
(${MK_RUN_ASYNC_PARTS} || ${MK_RUN_SYNC_PARTS}) && main_mixed_parts
${MK_RUN_ASYNC_PARTS} && main_async_parts
${MK_RUN_SYNC_PARTS} && main_finalize_sync
) | { if ${MK_RUN_SYNC_PARTS}; then optionally_encrypt "${PASSPHRASE}" ""; else cat; fi; }
[ "${MK_LOOP_INTERVAL}" -gt 0 ] 2>/dev/null || return 0
sleep "${MK_LOOP_INTERVAL}"
done
}
[ -z "${MK_SOURCE_AGENT}" ] && main "$@"
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